Ore-concentrator.



TOBIAS L. CRANE, 0F MORENGI, ARIZONA.

ORE-CONCENTRATOR.

Specification. of Letters Patent.

Application filed February 4, 1914.

Patented Nov. 3, 19141: Serial No. 816,511.

To all whom t may concern Be it known that I, Tennis L. CRANE, a citizen of the United States, residing at Morenci,1 in the county of Greenlee and State of Arizona, have invented certain new and useful Improvements in Ore-Concentrators; and I do hereby declare the following to be a full, clear, and exact descrlption of the invention, such as will enable others skilled in the art to whichv it appertains to make and use the same.

One of the objects of this invention is to provide an improved deck for ore concentrators having the ritl'les so de signed and arranged as to secure the maximum eliiclency and capacity.

Another object of the invention is to provide an ore concentrator having a feed box of V-shaped cross section and extending parallel to the rear of the deck `adjacent the edge thereof, having the front of the deck so constructed as to permit the concentrates to discharge along the entire length thereof, and having the run for the dressing water extended the full length of the front of the table and part way along the head thereof.

With these and other objects in view as will become more apparent as the description proceeds, the invention consists in certain novel features of construction, combination and arrangement of parts as will be hereinafter more fully described and claimed.

For a complete understanding `of my invention, reference is to be had to the following description and accompanying drawings, in which Figure 1 is a top plan view of my irnproved ore concentrator deck, and Fig. 2 is a `section taken on the plane of line 2 2 of Fig. 1.

Referring in detail to Ithe drawings by numerals, 5 designates, generally, a deck which is more specifically designated by the corner numerals 6, 7, 8, 9 and 10. For the sake of clearness and brevity in the following description, the side 6 7 will be designated the head of the table; 7, 8, 9 the rear of the table, 9 10 the foot; and 6 10 the front. A wall 11 projects above the deck at the head and rear of the table and troughs 12 and 13 are provided at the front and foot of the deck respectively to receive the concentrates and the tailings. The trough 12 extends the full length of the front `and is arranged to receive the concentrates as they drop from the deck. This trough is separated from the trough 13 by a partition 14 and is provided adjacent one end with a discharge opening 15. The trough 13 extends the full length of the foot of the deck to receive the tailings as they drop therefrom and is provided with a discharge opening or port 16. These troughs, it `will be understood, may be made of any desired construction, and for the purpose of illustration I have shown them as being formed by an inner wall 17 extending downwardly from the edge of the table, a bottom wall 18 and an outer wall 19.

In carrying outmy invention, I cover that portion of the deck defined by the numerals 7, 8, 20, 21 and 22 with a plurality of slightly curved rillles 23 and 24. The riflles 23 extend from the rear to the front of the deck and have a general direction parallel to the head. It will be noted, however, that the rear portions of these riflles are curved slightly toward the head of the table `and that the degree of curvature increases gradually in relation to the ncarness of the riflie to the head of the table. The rilles 24 extend from the front of the deck rearwardly ang1 terminate in engagement with the head wa That portion of the deck defined by the numerals 20, 16, 25 and 21 is provided with a series of straight riflles 26 which extend from the front of the deck toward the rear at a slight inclination to the head of the table. These riilles terminate short of the rear wall of the table and their rear ends are arranged in a plane extending substantially parallel to the rear edge 8 9 of the deck.

A feed box 27, V-shaped in cross section, is arranged adjacent the rear edge of the table and extends parallel to the rear wall defined by the numerals 7 8. The feed box extends from the head wall to a point about centrally of the wall 7 8. A run or trough for the dressing water is supported over the deck by suitable arms 28 and extends along the full length of the front side of the deck and about half the length of the head.

In operation the pulps or slimes are placed in the feed box and from there are discharged onto the deck, `and as the deck is agitated, the concentrates feed forwardly into the trough 12 and the tailings are carried into the trough 13. Any suitable means, not shown? may be provided for properly agitating the table and adjusting the inclination thereof to secure a proper operation of the concentrator.

From the foregoing description talen in connection With the accompanying draw-.Y- ings, it Will be apparent that have pro-- vided a Very etlicient concentrator hafing noyelly arranged riliies and a new arrange ment of feed box and dressing Water run, as Well as a concentrate discharge portion of the maximum length.

l/Vhile I have shown and described the preferred embodiment of my invention7 it will be understood that minorl changes in construction, combination and arrangement of parts may be made nf'ithont departing from the spirit and scope of the invention as claimed.

Having thus described my invention, l claim:--

ln an ore concentrating table, a retaining Wall extending along the head and rear thereof, a concentrate trough running along the front of the table, a tailings trough er;- tending along the foot of the table, a series of riffles running from the rear to the front misere of the table and curving adjacent their rear ends toward the head of the table, a second series of riiies arranged between said First mentioned series and the head of the table, and extending from the frontof the table in gradual curves into engagement with the head thereof7 a third series of riifles located adjacent the foot of the table and running from the front edge thereof toward the vrear of the table at a slight inclination to the head9 said last mentioned rifiles terminating in spaced relation to the rear WallA` a feed bonr arranged at the rear of the table adgaeent the head thereof and extending` across a number of the riflies forming the first mentioned series and a run for the dressing Water, said run being supported above the surface of the table and extending the full length of the front edge thereof and part Way along the head of the table.

ln testimony whereof l affix my signature in presence of two Witnesses.

TBS L. CRANE.

Vtnesses Guiones H. SCOTT, CHARLES, E. DUrF.

Copies of this patent may be obtained for five cents each, by addressing the Uommissioner of Patents,

Washington, D. G. 

